Find the measure of each exterior angle of an equilateral triangle.

To do:

We have to find the measure of each exterior angle of an equilateral triangle.

Solution:

We know that,

Each interior angle in an equilateral triangle is $60^o$.

At each vertex,

Interior angle $+$ Exterior angle $= 180^o$

This implies,

$60^o+$ Exterior angle $= 180^o - 60^o = 120^o$

The measure of each exterior angle of an equilateral triangle is $120^o$.

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Updated on: 10-Oct-2022

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